The present invention relates to a method for producing syringyl lignin in
gymnosperms. The production of syringyl lignin in gymnosperms is
accomplished by genetically transforming a gymnosperm genome, which does
not normally contain genes which code for enzymes necessary for
production of syringyl lignin, with DNA which codes for enzymes found in
angiosperms associated with production of syringyl lignin. The expression
of the inserted DNA is mediated using host promoter regions in the
gymnosperm. In addition, genetic sequences which code for gymnosperm
lignin anti-sense mRNA may be incorporated into the gymnosperm genome in
order to suppress the formation of the less preferred forms of lignin in
the gymnosperm such as guaiacyl lignin.